Re: FX-5500 vs. 6200
If his computer is AGP based, he can't use the 6200TC, since that is for PCI-Express only. That being said, the 6200TC is somewhat slower than the 6200, since it uses mainly system memory for storing graphics data.
The jump from a 6200 to a 6600GT is very notable, maybe 3x the performance in most cases.
Gigabyte GA-P55-UD4 - Core i7 860 2.8 GHz - 4GB PC10666 RAM - Samsung F1 1TB drive - 18x DVD RW - GeForce GTS 250 512MB (to be replaced) - Corsair HX750 - LianLi PC2110B case - Windows 7 64